Servotech control systems offers variable voltage auto transformers. Servotech auto transformers facilitate smooth stepless variation of ac voltage from 0 to 270 v. Its favorable features include: excellent regulation, low magnetising current, and rugged design. The applicable areas are: servo voltage stabilisers, rectifier units, battery chargers, dc motor drives, electroplating equipment, and high voltage test benches. They are offered in capacities from 2 a to 28 a.